|  | /* | 
|  | *  Copyright 2019 The WebRTC project authors. All Rights Reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  |  | 
|  | #include "rtc_base/experiments/stable_target_rate_experiment.h" | 
|  |  | 
|  | #include "api/field_trials_view.h" | 
|  | #include "rtc_base/experiments/field_trial_parser.h" | 
|  |  | 
|  | namespace webrtc { | 
|  | namespace { | 
|  | constexpr char kFieldTrialName[] = "WebRTC-StableTargetRate"; | 
|  | }  // namespace | 
|  |  | 
|  | StableTargetRateExperiment::StableTargetRateExperiment( | 
|  | const FieldTrialsView& key_value_config) | 
|  | : enabled_("enabled", false), | 
|  | video_hysteresis_factor_("video_hysteresis_factor", | 
|  | /*default_value=*/1.2), | 
|  | screenshare_hysteresis_factor_("screenshare_hysteresis_factor", | 
|  | /*default_value=*/1.35) { | 
|  | ParseFieldTrial( | 
|  | {&enabled_, &video_hysteresis_factor_, &screenshare_hysteresis_factor_}, | 
|  | key_value_config.Lookup(kFieldTrialName)); | 
|  | } | 
|  |  | 
|  | StableTargetRateExperiment::StableTargetRateExperiment( | 
|  | const StableTargetRateExperiment&) = default; | 
|  | StableTargetRateExperiment::StableTargetRateExperiment( | 
|  | StableTargetRateExperiment&&) = default; | 
|  |  | 
|  | bool StableTargetRateExperiment::IsEnabled() const { | 
|  | return enabled_.Get(); | 
|  | } | 
|  |  | 
|  | double StableTargetRateExperiment::GetVideoHysteresisFactor() const { | 
|  | return video_hysteresis_factor_.Get(); | 
|  | } | 
|  |  | 
|  | double StableTargetRateExperiment::GetScreenshareHysteresisFactor() const { | 
|  | return screenshare_hysteresis_factor_.Get(); | 
|  | } | 
|  |  | 
|  | }  // namespace webrtc |